CN105226667B - A kind of wind-powered electricity generation collects the analysis method and device of regional voltage sensibility - Google Patents
A kind of wind-powered electricity generation collects the analysis method and device of regional voltage sensibility Download PDFInfo
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Abstract
The present invention provides the analysis method and device that a kind of wind-powered electricity generation collects regional voltage sensibility, and the analysis method includes：The reactive power exchange relation for collecting system according to STATCOM and wind-powered electricity generation establishes flow equation；Wind-powered electricity generation established according to flow equation collect all blower fans in system and run with constant power factor, and send it is active constant when the second flow equation；First reactive voltage sensitivity, the first susceptance voltage sensibility, the second reactive voltage sensitivity and the second susceptance voltage sensibility are obtained according to the second flow equation；First relational expression and the second relational expression are generated according to the first susceptance voltage sensibility and the second susceptance voltage sensibility；Reactive current I, capacitance B are obtained according to the first relational expression respectivelycAnd the first relation between equiva lent impedance X and voltage power-less sensitivity increase degree；And admittance value B is obtained according to the second relational expression respectivelyL, capacitance BcAnd the second relation between equiva lent impedance X and voltage power-less sensitivity increase degree.
Description
Technical field
The present invention is on wind power plant reactive voltage control technology, specifically collecting regional voltage on a kind of wind-powered electricity generation
The analysis method and device of sensitivity.
Background technology
Due to the characteristic distributions of THE WIND ENERGY RESOURCES IN CHINA, determine that the wind-powered electricity generation taken at present concentrates access on a large scale, it is long away from
From the mode of conveying supply load.With the continuous expansion of blower fan installed capacity, the drawbacks of this mode is brought, increasingly appears, i.e.,
Concentrate grid-connected Network Construction of Power Transmission capacity of short circuit smaller, local dip also may can cause chain response in bulk zone.Closely
A lot of chain off-grid accidents of blower fan occur for Nian Lai, the extensive area of concentration of wind-powered electricity generation, and a portion accident is due in wind power plant
Some Wind turbines do not carry out the transformation of low voltage crossing, so as to cause these Wind turbines when short trouble occurring inside
Low-voltage off-grid, other units cause its high voltage off-grid because of idle superfluous again.Another part accident is due to then windy
Field blower fan is under non-failure conditions because high voltage causes chain off-grid.
To avoid the generation of above-mentioned accident, area need to be collected to the wind-powered electricity generation of SVC (SVC) control mode and entered
Row voltage stability is evaluated, and targeted SVC is by perceptual branch road and capacitive branch group in existing Voltage Stability Assessment Method
Into, but most of wind power plant SVC only control inductive branch roads at present, and capacitive branch is then by the way of manual switching, the evaluation
Method discusses for the permanent idle control of wind power plant SVC perception branch road, when research has electric capacity disturbance in systems, utilizes electricity
Pressure-idle Sensitivity Method evaluation SVC such a control mode influences on collecting regional voltage stability.
Following two shortcomings be present in such a evaluation method：(1) wind power plant SVC dynamic behaviour, and each wind in area are only considered
Electric field is using the permanent idle control mode of SVC perception branch road.But from the point of view of the PMU data of actual wind power plant, wind before accident occurs
Electric field dynamic reactive equipment is mainly double-fed type influence generator (DFIG), and some wind power plant, which is thrown, static reacance
Device (SVG).(2) only using the inductive reactive power input amount of dynamic reactive compensation device as the factor for causing voltage sensibility to increase,
And analysis process assumes that input condenser capacity is equal with the idle input amount of dynamic reactive compensation device perception branch road in initial fields
Condition.However, the actual condenser capacity put into of wind power plant and may not meet this condition.
The content of the invention
The main purpose of the embodiment of the present invention be to provide the analysis method that a kind of wind-powered electricity generation collects regional voltage sensibility and
Device, the defects of to overcome in the presence of existing Voltage Stability Assessment Method.
To achieve these goals, the embodiment of the present invention provides the analysis side that a kind of wind-powered electricity generation collects regional voltage sensibility
Method, the analysis method include：The reactive power exchange relation for collecting system according to STATCOM and wind-powered electricity generation establishes power flow equation
Formula；The wind-powered electricity generation is established according to the flow equation collect all blower fans in system and run with constant power factor, and send
It is active constant when the second flow equation；First reactive voltage sensitivity and the are obtained according to second flow equation
One susceptance voltage sensibility, and the STATCOM is further obtained using the second reactive voltage during permanent idle control
Sensitivity and the second susceptance voltage sensibility；Generated according to the first susceptance voltage sensibility and the second susceptance voltage sensibility
Reactive current I, input capacitance BcAnd the first relational expression between the equiva lent impedance X between wind power plant and system, and
The admittance value B of perceptual branch road inputL, input capacitance BcAnd second between the equiva lent impedance X between wind power plant and system
Relational expression；According to first relational expression respectively to reactive current I, capacitance BcAnd equiva lent impedance X derivations, obtain described idle
Electric current I, capacitance BcAnd the first relation between equiva lent impedance X and voltage-idle sensitivity increase degree；And according to described
Second relational expression is respectively to admittance value BL, capacitance BcAnd equiva lent impedance X derivations, obtain the admittance value BL, capacitance BcAnd wait
Imitate the second relation between impedance X and voltage-idle sensitivity increase degree.
In one embodiment, above-mentioned flow equation is：
Wherein, X be wind power plant system total impedance, X=Xs+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTTo rise
Pressure transformer impedance；I is the reactive current that STATCOM provides to system；P is that all blower fans are sent in wind power plant
It is active；Q sends idle for all blower fans in wind power plant；BcThe admittance value of capacitor is thrown by original state in wind power plant；Nothing
Poor big voltage E=1.
In one embodiment, the second above-mentioned flow equation is：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0, wherein, Bc is thrown by original state in wind power plant
The admittance value of capacitor.
In one embodiment, the first above-mentioned reactive voltage sensitivityAnd the first susceptance voltage sensibilityFor：
In one embodiment, when above-mentioned STATCOM is using permanent idle control, QSTAT=IV is constant, then described
The second reactive voltage sensitivityAnd the second susceptance voltage sensibilityFor：
In one embodiment, the first above-mentioned relational expression is：f1(Bc, I, X) and=IX (V+ (I-VBc) X), described second
Relational expression is：f2(Bc, BL, X) and=2V2BL(1+((BL-Bc) X) X), wherein, BLPropped up for original state SVC perception
Admittance value input by road.
In one embodiment, the first above-mentioned relation is：
In one embodiment, the second above-mentioned relation is：
The embodiment of the present invention also provides the analytical equipment that a kind of wind-powered electricity generation collects regional voltage sensibility, described analytical equipment
Including：Flow equation establishes unit, and the reactive power exchange relation for collecting system with wind-powered electricity generation according to STATCOM is built
Vertical flow equation；Second flow equation establishes unit, collects for establishing the wind-powered electricity generation according to the flow equation and is
All blower fans are run with constant power factor in system, and send it is active constant when the second flow equation；Voltage sensibility
Acquiring unit, for obtaining the first reactive voltage sensitivity and the first susceptance pressure sensitive according to second flow equation
Degree, and the STATCOM is further obtained using the second reactive voltage sensitivity during permanent idle control and the second electricity
Receive voltage sensibility；Relational expression generation unit, for according to the first susceptance voltage sensibility and the second susceptance pressure sensitive
Degree generation reactive current I, the capacitance B of inputcAnd the first relation between the equiva lent impedance X between wind power plant and system
Formula, and the admittance value B of perceptual branch road inputL, input capacitance BcAnd the equiva lent impedance X between wind power plant and system it
Between the second relational expression；Relation acquisition unit, for according to first relational expression respectively to reactive current I, capacitance BcAnd
Equiva lent impedance X derivations, obtain the reactive current I, capacitance BcAnd equiva lent impedance X and voltage-idle sensitivity increase degree
Between the first relation；And according to second relational expression respectively to admittance value BL, capacitance BcAnd equiva lent impedance X derivations, obtain
Take the admittance value BL, capacitance BcAnd the second relation between equiva lent impedance X and voltage-idle sensitivity increase degree.
In one embodiment, above-mentioned flow equation is：
Wherein, X be wind power plant system total impedance, X=Xs+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTTo rise
Pressure transformer impedance；I is the reactive current that STATCOM provides to system；P is that all blower fans are sent in wind power plant
It is active；Q sends idle for all blower fans in wind power plant；BcThe admittance value of capacitor is thrown by original state in wind power plant；Nothing
Poor big voltage E=1.
In one embodiment, the second above-mentioned flow equation is：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0, wherein, Bc is thrown by original state in wind power plant
The admittance value of capacitor.
In one embodiment, the first above-mentioned reactive voltage sensitivityAnd the first susceptance voltage sensibilityFor：
In one embodiment, when above-mentioned STATCOM is using permanent idle control, QSTAT=IV is constant, then described
The second reactive voltage sensitivityAnd the second susceptance voltage sensibilityFor：
In one embodiment, the first above-mentioned relational expression is：f1(Bc, I, X) and=IX (V+ (I-VBc) X), described second
Relational expression is：f2(Bc, BL, X) and=2V2BL(1+((BL-Bc) X) X), wherein, BLPropped up for original state SVC perception
Admittance value input by road.
In one embodiment, the first above-mentioned relation is：
In one embodiment, the second above-mentioned relation is：
The beneficial effect of the embodiment of the present invention is, considers wind-powered electricity generation and collects regional static reacance generator and double-fed type
Influence generator influences the internal factor of voltage sensibility, and the voltage sensibility that area is collected to wind-powered electricity generation is analyzed, to prevention
Wind-powered electricity generation, which collects the area extensive fault-free off-grid accident of generation, has reference value.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the flow chart for the analysis method for collecting regional voltage sensibility according to the wind-powered electricity generation of the embodiment of the present invention；
Fig. 2 is according to the STATCOM of the embodiment of the present invention and the reactive power exchange graph of a relation of wind power system；
Fig. 3 is that wind-powered electricity generation collects area in the case of initial capacitive reactive power, and voltage rises situation after being disturbed by electric capacity
Schematic diagram；
Fig. 4 is that wind-powered electricity generation collects area in the case of initial inductive reactive power, and voltage rises situation after being disturbed by electric capacity
Schematic diagram；
Fig. 5 is that wind-powered electricity generation collects area in the case of system short circuit capacity difference, and voltage rises after being disturbed by electric capacity
Situation schematic diagram；
Fig. 6 is the structural representation for the analytical equipment for collecting regional voltage sensibility according to the wind-powered electricity generation of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides the analysis method and device that a kind of wind-powered electricity generation collects regional voltage sensibility.Below in conjunction with attached
The present invention is described in detail for figure.
The embodiment of the present invention provides the analysis method that a kind of wind-powered electricity generation collects regional voltage sensibility, as shown in figure 1, the analysis
Method mainly includes following steps：
Step S101：The reactive power exchange relation for collecting system according to STATCOM and wind-powered electricity generation establishes power flow equation
Formula.
STATCOM (Static Synchronous Compensator, also known as abbreviation STATCOM, SVG) is
The representative of current reactive-load compensation field state-of-the-art technology, belong to flexible flexible AC transmitting system (FACTS) important component.
STATCOM is parallel in power network, the reactive current source controllable equivalent to one, its reactive current can rapidly follow load without
The change of work(electric current and change, it is automatic compensate network system needed for reactive power, realize that dynamic reactive is mended to power system reactive power
Repay.The reactive power exchange relation of STATCOM and wind power system is as shown in Figure 2.In Fig. 2, X be wind power plant system total impedance, X=Xs
+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTFor step-up transformer impedance；I is STATCOM to system
The reactive current of offer；P sends active for all blower fans in wind power plant；Q sends idle for all blower fans in wind power plant；Bc
The admittance value of capacitor is thrown by original state in wind power plant；Infinitely great voltage E=1, all amounts are represented with perunit value in figure.
Therefore, the flow equation that the STATCOM according to Fig. 2 is established with System Reactive Power commutative relation is：
Step S102：Wind-powered electricity generation established according to flow equation collect all blower fans in system and run with constant power factor,
And send it is active constant when the second flow equation.
According to the flow equation established in step S101, it is assumed that all blower fans are with constant power factor 1 in wind power plant
Operation, and send active constant, by two formula summed squares in flow equation, the second flow equation is obtained after eliminating θ：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0 (2).
Step S103：First reactive voltage sensitivity and the first susceptance pressure sensitive are obtained according to the second flow equation
Degree, and STATCOM is further obtained using the second reactive voltage sensitivity during permanent idle control and the second susceptance electricity
Press sensitivity.
According to above-mentioned second flow equation, to Q and BcLocal derviation is sought respectively, you can the when obtaining STATCOM without control
One reactive voltage sensitivityAnd the first susceptance voltage sensibility
Also, further, when STATCOM is using permanent idle control, QSTAT=IV is constant, and this relational expression is substituted into
Formula (3) is stated, the second reactive voltage sensitivity under the conditions of this can be tried to achieve respectivelyAnd the second susceptance voltage sensibility
Step S104：According to the first susceptance voltage sensibility and the second susceptance voltage sensibility generation reactive current I, input
Capacitance BcAnd the first relational expression between the equiva lent impedance X between wind power plant and system, and perceptual branch road input
Admittance value BL, input capacitance BcAnd the second relational expression between the equiva lent impedance X between wind power plant and system.
Understood according to above-mentioned formula (3), (4), in formula (3), (4)WithExpression formula only in the difference of denominator,
Both are subtracted each other, reactive current I, the capacitance B of input can be obtainedcAnd between the equiva lent impedance X between wind power plant and system
First relational expression f1(Bc, I, X)：
f1(Bc, I, X) and=IX (V+ (I-VBc)X) (5)；
Also, it can further obtain the admittance value B of perceptual branch road inputL, input capacitance BcAnd wind power plant and system
Between equiva lent impedance X between the second relational expression f2(Bc, BL, X)：
f2(Bc, BL, X) and=2V2BL(1+((BL-Bc)X)X) (6)。
It can be seen that according to above-mentioned formula (5), (6), can be attributed to by influenceing the factor of voltage sensibility increase degree by three：Just
Inductive reactive power amount (the B during beginningLOr I), input capacitance (Bc) and wind power plant and system between equiva lent impedance (X).
Step S105：According to the first relational expression respectively to reactive current I, capacitance BcAnd equiva lent impedance X derivations, obtain nothing
Work(electric current I, capacitance BcAnd the first relation between equiva lent impedance X and voltage-idle sensitivity increase degree；And according to
Two relational expressions are respectively to admittance value BL, capacitance BcAnd equiva lent impedance X derivations, obtain admittance value BL, capacitance BcAnd equiva lent impedance
The second relation between X and voltage-idle sensitivity increase degree.
For above-mentioned formula (5), (6) respectively about Bc, BLWith X derivations, that is, obtain above three factor and voltage-idle
Relation between sensitivity increase degree：
It can be seen that from formula (7)~(9)：If I>0, i.e. DFIG and SVG or SVC, which are in, determines inductive reactive power state of a control
When, formula (7) is then permanent to be less than 0, and formula (8) is more than 0, and dynamic reactive compensation device is in such a controlling party in this explanation wind power plant
Under formula, when being disturbed by electric capacity, its initial inductive reactive power input amount is bigger, the increase of field side bus voltage-idle sensitivity
Degree is also bigger；On the contrary, if the condenser capacity initially put into field is bigger, the increasing of field side bus voltage-idle sensitivity
Big degree is smaller；In addition, formula (9) shows, wind power plant busbar short-circuit capacity]Less voltage-idle remolding sensitivity short circuit is held
Measure the even more serious of bigger voltage-idle sensitivity rising.As shown in Figures 3 to 5, represent that certain wind-powered electricity generation collects area respectively
In the case of initial capacitive reactive power, initial inductive reactive power and system short circuit capacity difference, after being disturbed by electric capacity on voltage
Rise situation, demonstrate the embodiment of the present invention wind-powered electricity generation collect regional voltage sensibility analysis method correctness.
The embodiment of the present invention provides the analytical equipment that a kind of wind-powered electricity generation collects regional voltage sensibility, as shown in fig. 6, the analysis
Device mainly includes：Flow equation establishes unit 1, the second flow equation establishes unit 2, voltage sensibility acquiring unit 3,
Relational expression generation unit 4 and Relation acquisition unit 5.
Wherein, above-mentioned flow equation establishes unit 1 and is used to collect system according to STATCOM and wind-powered electricity generation
Reactive power exchange relation establishes flow equation.
STATCOM (Static Synchronous Compensator, also known as abbreviation STATCOM, SVG) is
The representative of current reactive-load compensation field state-of-the-art technology, belong to flexible flexible AC transmitting system (FACTS) important component.
STATCOM is parallel in power network, the reactive current source controllable equivalent to one, its reactive current can rapidly follow load without
The change of work(electric current and change, it is automatic compensate network system needed for reactive power, realize that dynamic reactive is mended to power system reactive power
Repay.The reactive power exchange relation of STATCOM and wind power system is as shown in Figure 2.In Fig. 2, X be wind power plant system total impedance, X=Xs
+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTFor step-up transformer impedance；I is STATCOM to system
The reactive current of offer；P sends active for all blower fans in wind power plant；Q sends idle for all blower fans in wind power plant；Bc
The admittance value of capacitor is thrown by original state in wind power plant；Infinitely great voltage E=1, all amounts are represented with perunit value in figure.
Therefore, the flow equation that the STATCOM according to Fig. 2 is established with System Reactive Power commutative relation is：
The second above-mentioned flow equation establish unit 2 be used for according to flow equation establish wind-powered electricity generation collect in system own
Blower fan is run with constant power factor, and send it is active constant when the second flow equation.
The flow equation established is established in unit 1 according to flow equation, it is assumed that in wind power plant all blower fans with
Constant power factor 1 is run, and sends active constant, and by two formula summed squares in flow equation, the second tide is obtained after eliminating θ
Flow equation：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0 (2).
Voltage sensibility acquiring unit 3 is used to obtain the first reactive voltage sensitivity and first according to the second flow equation
Susceptance voltage sensibility, and STATCOM is further obtained using the second reactive voltage sensitivity during permanent idle control
And the second susceptance voltage sensibility.
According to above-mentioned second flow equation, to Q and BcLocal derviation is sought respectively, you can the when obtaining STATCOM without control
One reactive voltage sensitivityAnd the first susceptance voltage sensibility
Also, further, when STATCOM is using permanent idle control, QSTAT=IV is constant, and this relational expression is substituted into
Formula (3) is stated, the second reactive voltage sensitivity under the conditions of this can be tried to achieve respectivelyAnd the second susceptance voltage sensibility
Relational expression generation unit 4 is used for idle according to the first susceptance voltage sensibility and the generation of the second susceptance voltage sensibility
Electric current I, input capacitance BcAnd the first relational expression between the equiva lent impedance X between wind power plant and system, and perception
The admittance value B of branch road inputL, input capacitance BcAnd the second relation between the equiva lent impedance X between wind power plant and system
Formula.
Understood according to above-mentioned formula (3), (4), in formula (3), (4)WithExpression formula only in the difference of denominator,
Both are subtracted each other, reactive current I, the capacitance B of input can be obtainedcAnd between the equiva lent impedance X between wind power plant and system
First relational expression f1(Bc, I, X)：
f1(Bc, I, X) and=IX (V+ (I-VBc)X) (5)；
Also, it also can obtain the admittance value B of perceptual branch road inputL, input capacitance BcAnd between wind power plant and system
Equiva lent impedance X between the second relational expression f2(Bc, BL, X)：
f2(Bc, BL, X) and=2V2BL(1+((BL-Bc)X)X) (6)。
It can be seen that according to above-mentioned formula (5), (6), can be attributed to by influenceing the factor of voltage sensibility increase degree by three：Just
Inductive reactive power amount (the B during beginningLOr I), input capacitance (Bc) and wind power plant and system between equiva lent impedance (X).
Relation acquisition unit 5 is used for according to the first relational expression respectively to reactive current I, capacitance BcAnd equiva lent impedance X is asked
Lead, obtain reactive current I, capacitance BcAnd the first relation between equiva lent impedance X and voltage-idle sensitivity increase degree；
And according to the second relational expression respectively to admittance value BL, capacitance BcAnd equiva lent impedance X derivations, obtain admittance value BL, capacitance Bc
And the second relation between equiva lent impedance X and voltage-idle sensitivity increase degree.
For above-mentioned formula (5), (6) respectively about Bc, BLWith X derivations, that is, obtain above three factor and voltage-idle
Relation between sensitivity increase degree：
It can be seen that from formula (7)~(9)：If I>0, i.e. DFIG and SVG or SVC, which are in, determines inductive reactive power state of a control
When, formula (7) is then permanent to be less than 0, and formula (8) is more than 0, and dynamic reactive compensation device is in such a controlling party in this explanation wind power plant
Under formula, when being disturbed by electric capacity, its initial inductive reactive power input amount is bigger, the increase of field side bus voltage-idle sensitivity
Degree is also bigger；On the contrary, if the condenser capacity initially put into field is bigger, the increasing of field side bus voltage-idle sensitivity
Big degree is smaller；In addition, formula (9) shows, wind power plant busbar short-circuit capacity]Less voltage-idle remolding sensitivity short circuit is held
Measure the even more serious of bigger voltage-idle sensitivity rising.As shown in Figures 3 to 5, represent that certain wind-powered electricity generation collects area respectively
In the case of initial capacitive reactive power, initial inductive reactive power and system short circuit capacity difference, after being disturbed by electric capacity on voltage
Rise situation, demonstrate the embodiment of the present invention wind-powered electricity generation collect regional voltage sensibility analytical equipment accuracy.
One of ordinary skill in the art will appreciate that realize that all or part of step in above-described embodiment method can lead to
Program is crossed to instruct the hardware of correlation to complete, the program can be stored in a computer read/write memory medium, such as
ROM/RAM, magnetic disc, CD etc..
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present invention
Scope is protected, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in this
Within the protection domain of invention.
Claims (16)
1. a kind of wind-powered electricity generation collects the analysis method of regional voltage sensibility, it is characterised in that described analysis method includes：
The reactive power exchange relation for collecting system according to STATCOM and wind-powered electricity generation establishes flow equation；
The wind-powered electricity generation is established according to the flow equation collect all blower fans in system and run with constant power factor, and send
It is active constant when the second flow equation；
First reactive voltage sensitivity and the first susceptance voltage sensibility are obtained according to second flow equation, and further
The STATCOM is obtained using the second reactive voltage sensitivity during permanent idle control and the second susceptance pressure sensitive
Degree；
According to initial in the first susceptance voltage sensibility and the second susceptance voltage sensibility generation reactive current I, wind power plant
State throws the admittance value B of capacitorcAnd the first relational expression between the equiva lent impedance X between wind power plant and system, and
Admittance value B input by original state SVC perception branch roadL, original state throws leading for capacitor in wind power plant
Receive value BcAnd the second relational expression between the equiva lent impedance X between wind power plant and system；
The admittance value B of capacitor is thrown original state in reactive current I, wind power plant respectively according to first relational expressioncAnd wait
Impedance X derivations are imitated, obtain the reactive current I, original state throws the admittance value B of capacitor in wind power plantcAnd equiva lent impedance X
With the first relation between voltage-idle sensitivity increase degree；And
According to second relational expression respectively to the admittance value B input by original state SVC perception branch roadL, wind
Original state throws the admittance value B of capacitor in electric fieldcAnd equiva lent impedance X derivations, obtain original state SVC
Admittance value B input by perceptual branch roadL, original state throws the admittance value B of capacitor in wind power plantcAnd equiva lent impedance X and electricity
The second relation between pressure-idle sensitivity increase degree.
2. wind-powered electricity generation according to claim 1 collects the analysis method of regional voltage sensibility, it is characterised in that described tide
Flow equation is：
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<mi>V</mi>
</mrow>
<mi>X</mi>
</mfrac>
<mi>sin</mi>
<mi>&theta;</mi>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>Q</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo>-</mo>
<mi>E</mi>
<mi>V</mi>
</mrow>
<mi>X</mi>
</mfrac>
<mi>cos</mi>
<mi>&theta;</mi>
<mo>+</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mn>1</mn>
<mi>X</mi>
</mfrac>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mi>I</mi>
<mi>V</mi>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>,</mo>
</mrow>
Wherein, X=Xs+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTFor step-up transformer impedance；I is static same
The reactive current that step compensator provides to system；P sends active for all blower fans in wind power plant；Q is all wind in wind power plant
Machine is sent idle；Infinitely great voltage E=1.
3. wind-powered electricity generation according to claim 2 collects the analysis method of regional voltage sensibility, it is characterised in that described
Two flow equations are：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0.
4. wind-powered electricity generation according to claim 3 collects the analysis method of regional voltage sensibility, it is characterised in that described
One reactive voltage sensitivityAnd the first susceptance voltage sensibilityFor：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<mi>V</mi>
</mrow>
<mrow>
<mo>&part;</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<msup>
<mi>V</mi>
<mn>3</mn>
</msup>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>3</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>I</mi>
<mn>2</mn>
</msup>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<mi>V</mi>
</mrow>
<mrow>
<mo>&part;</mo>
<mi>Q</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>3</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>I</mi>
<mn>2</mn>
</msup>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
5. wind-powered electricity generation according to claim 4 collects the analysis method of regional voltage sensibility, it is characterised in that described static
When synchronous compensator is using permanent idle control, then the second described reactive voltage sensitivityAnd the second susceptance voltage sensibilityFor：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<msup>
<mi>V</mi>
<mo>&prime;</mo>
</msup>
</mrow>
<mrow>
<mo>&part;</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<msup>
<mi>V</mi>
<mn>3</mn>
</msup>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>2</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<msup>
<mi>V</mi>
<mo>&prime;</mo>
</msup>
</mrow>
<mrow>
<mo>&part;</mo>
<mi>Q</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>2</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
6. wind-powered electricity generation according to claim 5 collects the analysis method of regional voltage sensibility, it is characterised in that described
One relational expression is：f1(Bc, I, X) and=IX (V+ (I-VBc) X), the second described relational expression is：f2(Bc, BL, X) and=2V2BL(1+
((BL-Bc)X)X)。
7. wind-powered electricity generation according to claim 6 collects the analysis method of regional voltage sensibility, it is characterised in that described
One relation is：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mo>-</mo>
<msup>
<mi>IVX</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>I</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>I</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mi>V</mi>
<mo>+</mo>
<mo>(</mo>
<mrow>
<mn>2</mn>
<mi>I</mi>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>X</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mi>I</mi>
<mrow>
<mo>(</mo>
<mi>V</mi>
<mo>+</mo>
<mn>2</mn>
<mi>X</mi>
<mo>(</mo>
<mrow>
<mi>I</mi>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
8. wind-powered electricity generation according to claim 7 collects the analysis method of regional voltage sensibility, it is characterised in that described
Two relations are：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mo>-</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>L</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mi>X</mi>
<mo>+</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>X</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>+</mo>
<mn>2</mn>
<mo>(</mo>
<mrow>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
9. a kind of wind-powered electricity generation collects the analytical equipment of regional voltage sensibility, it is characterised in that described analytical equipment includes：
Flow equation establishes unit, and the reactive power exchange relation for collecting system according to STATCOM and wind-powered electricity generation is established
Flow equation；
Second flow equation establishes unit, collects all wind in system for establishing the wind-powered electricity generation according to the flow equation
Machine is run with constant power factor, and send it is active constant when the second flow equation；
Voltage sensibility acquiring unit, for obtaining the first reactive voltage sensitivity and first according to second flow equation
Susceptance voltage sensibility, and the STATCOM is further obtained using the second reactive voltage spirit during permanent idle control
Sensitivity and the second susceptance voltage sensibility；
Relational expression generation unit, for idle according to the first susceptance voltage sensibility and the generation of the second susceptance voltage sensibility
Original state throws the admittance value B of capacitor in electric current I, wind power plantcAnd between the equiva lent impedance X between wind power plant and system
The first relational expression, and the admittance value B input by original state SVC perception branch roadL, it is initial in wind power plant
State throws the admittance value B of capacitorcAnd the second relational expression between the equiva lent impedance X between wind power plant and system；
Relation acquisition unit, for throwing electricity to original state in reactive current I, wind power plant respectively according to first relational expression
The admittance value B of containercAnd equiva lent impedance X derivations, obtain the reactive current I, original state throws capacitor in wind power plant
Admittance value BcAnd the first relation between equiva lent impedance X and voltage-idle sensitivity increase degree；And
According to second relational expression respectively to the admittance value B input by original state SVC perception branch roadL, wind
Original state throws the admittance value B of capacitor in electric fieldcAnd equiva lent impedance X derivations, obtain original state SVC
Admittance value B input by perceptual branch roadL, original state throws the admittance value B of capacitor in wind power plantcAnd equiva lent impedance X and electricity
The second relation between pressure-idle sensitivity increase degree.
10. wind-powered electricity generation according to claim 9 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
Flow equation is：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mi>P</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>E</mi>
<mi>V</mi>
</mrow>
<mi>X</mi>
</mfrac>
<mi>sin</mi>
<mi>&theta;</mi>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>Q</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo>-</mo>
<mi>E</mi>
<mi>V</mi>
</mrow>
<mi>X</mi>
</mfrac>
<mi>cos</mi>
<mi>&theta;</mi>
<mo>+</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mn>1</mn>
<mi>X</mi>
</mfrac>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mi>I</mi>
<mi>V</mi>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>,</mo>
</mrow>
Wherein, X=Xs+XL+XT, XsFor system impedance, XLFor transmission line of electricity impedance, XTFor step-up transformer impedance；I is static same
The reactive current that step compensator provides to system；P sends active for all blower fans in wind power plant；Q is all wind in wind power plant
Machine is sent idle；Infinitely great voltage E=1.
11. wind-powered electricity generation according to claim 10 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
Second flow equation is：
(1-BcX)2V4+2IX(1-BcX)V3+(I2X2-1)V2+P2X2=0.
12. wind-powered electricity generation according to claim 11 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
One reactive voltage sensitivityAnd the first susceptance voltage sensibilityFor：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<mi>V</mi>
</mrow>
<mrow>
<mo>&part;</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<msup>
<mi>V</mi>
<mn>3</mn>
</msup>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>3</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>I</mi>
<mn>2</mn>
</msup>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<mi>V</mi>
</mrow>
<mrow>
<mo>&part;</mo>
<mi>Q</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>3</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>I</mi>
<mn>2</mn>
</msup>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
13. wind-powered electricity generation according to claim 12 collects the analytical equipment of regional voltage sensibility, it is characterised in that described quiet
When only synchronous compensator is using permanent idle control, then the second reactive voltage sensitivityAnd the second susceptance voltage sensibilityFor：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<msup>
<mi>V</mi>
<mo>&prime;</mo>
</msup>
</mrow>
<mrow>
<mo>&part;</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<msup>
<mi>V</mi>
<mn>3</mn>
</msup>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>2</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<mo>&part;</mo>
<msup>
<mi>V</mi>
<mo>&prime;</mo>
</msup>
</mrow>
<mrow>
<mo>&part;</mo>
<mi>Q</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<mrow>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msup>
<mi>IX</mi>
<mn>2</mn>
</msup>
</mrow>
<mrow>
<mn>2</mn>
<msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mo>+</mo>
<mn>2</mn>
<mi>I</mi>
<mi>V</mi>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mi>X</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mn>1</mn>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
14. wind-powered electricity generation according to claim 13 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
First relational expression is：f1(Bc, I, X) and=IX (V+ (I-VBc) X), the second described relational expression is：f2(Bc, BL, X) and=2V2BL(1+
((BL-Bc)X)X)。
15. wind-powered electricity generation according to claim 14 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
First relation is：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mo>-</mo>
<msup>
<mi>IVX</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>I</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>I</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mi>X</mi>
<mrow>
<mo>(</mo>
<mi>V</mi>
<mo>+</mo>
<mo>(</mo>
<mrow>
<mn>2</mn>
<mi>I</mi>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>1</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>X</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mi>I</mi>
<mrow>
<mo>(</mo>
<mi>V</mi>
<mo>+</mo>
<mn>2</mn>
<mi>X</mi>
<mo>(</mo>
<mrow>
<mi>I</mi>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
3
16. wind-powered electricity generation according to claim 15 collects the analytical equipment of regional voltage sensibility, it is characterised in that described
Second relation is：
<mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>c</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mo>-</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>dB</mi>
<mi>L</mi>
</msub>
</mrow>
</mfrac>
<mo>=</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mi>X</mi>
<mo>+</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<msup>
<mi>X</mi>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>df</mi>
<mn>2</mn>
</msub>
<mrow>
<mo>(</mo>
<mi>X</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>d</mi>
<mi>X</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mn>2</mn>
<msup>
<mi>V</mi>
<mn>2</mn>
</msup>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>+</mo>
<mn>2</mn>
<mo>(</mo>
<mrow>
<msub>
<mi>B</mi>
<mi>L</mi>
</msub>
<mo>-</mo>
<msub>
<mi>B</mi>
<mi>c</mi>
</msub>
</mrow>
<mo>)</mo>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>.</mo>
</mrow>
4
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| CN102832627A (en) * | 2012-07-02 | 2012-12-19 | 北京中科伏瑞电气技术有限公司 | Power network model-based wind power field automatic voltage control method |
| CN103515967A (en) * | 2013-09-17 | 2014-01-15 | 清华大学 | Method for collocating wind power plant reactive compensation |
| CN104600743A (en) * | 2014-12-26 | 2015-05-06 | 内蒙古电力(集团)有限责任公司 | System key variable extracting method considering wind power cluster power fluctuation |
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| CN102832627A (en) * | 2012-07-02 | 2012-12-19 | 北京中科伏瑞电气技术有限公司 | Power network model-based wind power field automatic voltage control method |
| CN103515967A (en) * | 2013-09-17 | 2014-01-15 | 清华大学 | Method for collocating wind power plant reactive compensation |
| CN104600743A (en) * | 2014-12-26 | 2015-05-06 | 内蒙古电力(集团)有限责任公司 | System key variable extracting method considering wind power cluster power fluctuation |
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